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keith
Joined: 19 Sep 2005 Posts: 3355 Location: near Detroit, Michigan, USA
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Posted: Sat May 31, 2008 2:20 pm Post subject: LA Times / Freep - May 30, 2008 |
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Still working on it ...
Code: | Puzzle: FP053008
+-------+-------+-------+
| . 2 8 | . 5 . | . . . |
| . . . | 9 . 8 | 5 . 6 |
| . . . | 2 7 . | . . . |
+-------+-------+-------+
| 7 . . | . . . | 4 . 3 |
| 5 4 . | . . . | . 6 7 |
| 3 . 6 | . . . | . . 2 |
+-------+-------+-------+
| . . . | . 1 9 | . . . |
| 9 . 7 | 8 . 4 | . . . |
| . . . | . 6 . | 7 9 . |
+-------+-------+-------+ |
Keith |
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storm_norm
Joined: 18 Oct 2007 Posts: 1741
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Posted: Sat May 31, 2008 3:59 pm Post subject: |
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very tough, here is a xy-chain approach
starting in r8c5 marked below...{23}-{13}-{18}-{89}-{29} ending in r5c3
eliminates 2 in r5c5
Code: | .------------------.------------------.------------------.
| 4 2 8 | 136 5 136 | 13 7 9 |
| 1 7 3 | 9 4 8 | 5 2 6 |
| 6 59 59 | 2 7 13 | 138 148 148 |
:------------------+------------------+------------------:
| 7 189 129 | 56 289 56 | 4 #18 3 |
| 5 4 #29 | 13 -2389 123 |#89 6 7 |
| 3 189 6 | 4 89 7 | 189 5 2 |
:------------------+------------------+------------------:
| 28 356 45 | 7 1 9 | 26 348 458 |
| 9 1356 7 | 8 #23 4 | 26 #13 15 |
| 28 13 14 | 35 6 235 | 7 9 148 |
'------------------'------------------'------------------' |
then...
Code: | .------------------.------------------.------------------.
| 4 2 8 | 136 5 136 | 13 7 9 |
| 1 7 3 | 9 4 8 | 5 2 6 |
| 6 59 59 | 2 7 13 | 138 148 148 |
:------------------+------------------+------------------:
| 7 189 129 | 56 289 56 | 4 #18 3 |
| 5 4 29 | 13 389 123 | 89 6 7 |
| 3 189 6 | 4 89 7 | 189 5 2 |
:------------------+------------------+------------------:
|#28 356 45 | 7 1 9 |#26 34-8 458 |
| 9 1356 7 | 8 #23 4 |#26 #13 15 |
| 28 13 14 | 35 6 235 | 7 9 148 |
'------------------'------------------'------------------' |
xy-chain starting in r4c8...{18}-{13}-{23}-{26}-{26}-{28} ending in r7c1 marked above. eliminates the 8 in r8c8
finally...
Code: | .------------------.------------------.------------------.
| 4 2 8 | 136 5 136 | 13 7 9 |
| 1 7 3 | 9 4 8 | 5 2 6 |
| 6 59 59 | 2 7 13 | 138 148 14 |
:------------------+------------------+------------------:
| 7 189 129 | 56 289 56 | 4 18 3 |
| 5 4 29 | 13 389 123 | 89 6 7 |
| 3 189 6 | 4 89 7 | 189 5 2 |
:------------------+------------------+------------------:
| 28 356 #45 | 7 1 9 | 26 #34 4-58 |
| 9 1356 7 | 8 23 4 | 26 #13 #15 |
| 28 13 14 | 35 6 235 | 7 9 148 |
'------------------'------------------'------------------' |
xy-chain starting in r8c9...{15}-{13}-{34}-{45} ending in r7c3 eliminates the 5 in r7c9 |
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keith
Joined: 19 Sep 2005 Posts: 3355 Location: near Detroit, Michigan, USA
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Posted: Sat May 31, 2008 4:29 pm Post subject: |
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I had a W-wing, XYZ-wing, and an extended XY-wing.
Code: | +----------------+----------------+----------------+
| 4 2 8 | 136 5 136 | 13 7 9 |
| 1 7 3 | 9 4 8 | 5 2 6 |
| 6 59 59 | 2 7 13 | 138 148 148 |
+----------------+----------------+----------------+
| 7 189 129 | 56 289 56 | 4 18 3 |
| 5 4 29 | 13 2389 123 | 89 6 7 |
| 3 189 6 | 4 89 7 | 189 5 2 |
+----------------+----------------+----------------+
| 28 356@ 45 | 7 1 9 | 26 348@ 458 |
| 9 -1356 7 | 8 23 4 | 26 13# 15 |
| 28 13# 14 | 35 6 235 | 7 9 -148 |
+----------------+----------------+----------------+ |
The W-wing takes out <1> in R8C2 and R9C9.
This reveals an XYZ-wing <458> that takes out <4> in R7C8.
The extended XY-wing is then in R79: {38}, {48}, {13 + 14 = 34}. It takes out <3> in R7C2.
(Edited to correctly describe extended XY-wing.)
Keith
Last edited by keith on Sat May 31, 2008 5:58 pm; edited 3 times in total |
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Johan
Joined: 25 Jun 2007 Posts: 206 Location: Bornem Belgium
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Posted: Sat May 31, 2008 4:55 pm Post subject: |
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The extra digits(+) in the 89 UR* in R46C25 are creating two pincer cells for digit <3> in R9C2(a) and R8C5(b), eliminating <3> in R9C46 and R8C2, collapsing the whole puzzle
Code: | +-------------------------+-------------------------+-------------------------+
| 4 2 8 | 136 5 136 | 13 7 9 |
| 1 7 3 | 9 4 8 | 5 2 6 |
| 6 59 59 | 2 7 13 | 138 148 148 |
+-------------------------+-------------------------+-------------------------+
| 7 * 89+1 129 | 56 * 89+2 56 | 4 18 3 |
| 5 4 29 | 13 2389 123 | 89 6 7 |
| 3 * 89+1 6 | 4 * 89 7 | 189 5 2 |
+-------------------------+-------------------------+-------------------------+
| 28 356 45 | 7 1 9 | 26 348 458 |
| 9 1-[3]56 7 | 8 2=3 b 4 | 26 13 15 |
| 28 1=3 a 14 |-[3]5 6 2-[3]5| 7 9 148 |
+-------------------------+-------------------------+-------------------------+ |
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CORUJA
Joined: 16 Jun 2007 Posts: 15 Location: BRUMADINHO - MG; BRAZIL
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Posted: Mon Jun 02, 2008 7:16 pm Post subject: LA TIMES/FREEP MAY 30 |
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Johan wrote: | The extra digits(+) in the 89 UR* in R46C25 are creating two pincer cells for digit <3> in R9C2(a) and R8C5(b), eliminating <3> in R9C46 and R8C2, collapsing the whole puzzle |
Wow!!!
Coruja.
(Edited by Marty to add ending quote tag) |
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